Amine derivatives of triphenylethylene



United States Patent AMINE DERIVATIVES or TRIPHENYLETHYLENE Robert E. Allen, Wyoming, and Frank P. Palopoll and Edward L. Schumann, Cincinnati, Ohio, and Marcus G. Van Campen, Jr., Berkeley, Calif., assignors to The Wm. S. Merl-ell Company No Drawing. Application August 6, 1957 Serial No. 676,477

6 Claims. (Cl. 260-570) I erties.

As estrogen antagonists, the compounds are useful in the treatment of hyperestrogenism and disorders related to this condition, e.-g., endometriosis, Kleinfelters syndrome, dysmenorrhea, menopausal disfunction, functional bleeding and similar conditions. They are active both orally and parenterally and so can be administered by either route, though the oral route is preferred in most instances. Some of the compounds have a high degree of activity as estrogen antagonists and are advantageously non-estrogenic. Some of the compounds with anti-estrogenic activity are also uterotrophic.

As anti-inflammatory agents, the compounds are useful in alleviating the symptoms of such collagen diseases as arthritis and rheumatism and in the topical treatment of inflammation. Some of the compounds possess the novel combination of anti-inflammatory and anti-estrogenic activities and are especially advantageous for this reason.

As gonadotrophic inhibition agents, the compounds are useful for the treatment of fertility and sterility problems and can be administered orally or parenterally for this purpose.

The compounds can be used orally or parenterally in doses ranging between 25 mg. and 2-4 grams daily, depending on the condition under treatment. For topical use, the compounds can be incorporated into creams, ointments or lotions in concentrations of up to percent. In aerosol sprays, the concentration can be in the order of about 0.05 to 1 percent.

The ethylenes can be isolated and are generally useful in the form of their salts with mineral acids such as hydrochloric or hydrobromic acid or with organic acids such as citric, oxalic or the like. They can be used as the base, however.

The compounds of our invention are derivatives of triphenyl ethylenes in which one of the phenyl groups is substituted by a basic ether group of the formula described below and in which the mono-phenyl substituted carbon atom in the ethylene group is linked to hydrogen. The new compounds have the formula Q R1 R C=OH in which one of the groups represented by R is a basic ether group of the formula OC,,H ,,A, wherein n is 2, 3 or 4 and A is an amino group or an alkylamino, di-

alkylamino or di(haloalkyl)amino group in which the alkyl groups contain from 1 to 4 carbon atoms. The

2,914,561 Patented Nov. 24, 1959 wherein the R and R substituents have the same meaning described above, except that A is not a di(haloalkyl)- amino group. The dehydration is carried out by using mineral acids such as hydrochloric, hydrobromic or phosphoric acid. The ethanols from which the ethylenes are prepared are described in our applications Serial No. 599,343, filed July 23, 1956, and now abandoned, and Serial No. 676,478, filed August 6, 1957.

The ethylenes in which A is a di(haloalkyl)amino group can be prepared by reacting an alkali metal salt of a hydroxybenzophenone with an alkyl halide such as ethylene chlorobromide to obtain a haloalkoxy benzophenone and reacting this compound with a benzyimagnesium bromide orchloride followed by dehydration followed by reaction with a dialkanolamine followed by reaction with a thionyl .halide.

The compounds of our invention will be further illustrated by reference to the following examples.

Example 1 1'- [p (B methylaminoethoxy)phenyl] I phenyl- 2-p-anisylethylene.-A mixture of 20 grams of l-ip-(B- methylaminoethoxy)phenyl] l phenyl 2 p anisylethanol in 200 cc. of ethanol containing an excess of hydrogen chloride was refluxed three hours. The solvent and excess HCl were removed under vacuum and the residue was dissolved in ethyl acetate and methanol. Crystallizing the product from methanol-ethyl acetate gave the hydrochloride salt of l-[p-(fl-methylaminoggrlc xygphenyll-l-phenyl-2-p-anisylethylene, melting at This compound exhibits uterotrophic estrogen antagonist, gonadotrophic inhibitory and anti-inflammatory activities.

Example 2 1 [p (5 aminoethoxy)phenyll 1 phenyl 2 panisylethylene.A solution of p-dibenzylamiuoethyl chloride in 200 ml. of toluene (prepared from grams of the HCl salt and excess potassium hydroxide solution) was added to a mixture of 67 grams of 4-hydroxybenzophenone and 19 grams of sodium methoxide in 300 ml. of ethanol during stirring and refluxing. After a period of 6 hours of refluxing, the solvent was removed, and an ether extract of the residue was washed with an excess of 10% sodium hydroxide solution and then water. The other layer was then concentrated on the steam bath, and crystals of 4-(fl-dibenzylamino)-ethoxybenzophenone were obtained, melting at 101-102 C. This ketone (87 grams) was suspended in 400 ml. of dry ether, and 500 ml. of an ether solution containing 0.20 moles of p-methoxybenzylmagnesium chloride was added, and the mix-' ture was stirred for 3 hours. An excess of 10% ammonium chloride solution was added with stirring. The

ether layer was separated and concentrated on the steam bath. The oily residue was dissolved in 500 ml. of ethanol and added to 12 grams of palladium on charcoal catalyst; the mixture was then hydrogenated at about 3 atmospheres pressure until about 2 mole equivalents of hy drogen is absorbed. The mixture was filtered, the filtrate concentrated on the steam bath, and ether added to the oily residue. Crystals of l-[p-(p-aminoethoxy)phenyl]- I-phenyl-Z-p-anisylethanol were obtained, melting at 131.5-132.5 C.

l [p 3-aminoethoxy)phenyl] 1 phenyl 2 panisy-lethanol was dehydrated by mixing it with 100 ml. of ethanol containing an excess of hydrogen chloride and refluxing for three hours. The solvent was replaced with ether and an excess of 10 percent sodium hydroxide solution, extracting the basic ether into the ether. After washing with water and drying with anhydrous magnesium sulfate, the ether was replaced with ethanol and the free base in ethanol was treated with an alcoholic solution of oxalic acid. The oxalate salt of 1-[p-( fl-aminoethoxy)- phenyl] -1-pheny1-2-p-anisylethylene was obtained, melting at 183 C. with decomposition.

This compound exhibits weakly estrogenic uterotrophic estrogen antagonist, gonadotrophic inhibitory and antiinfiammatory activities.

Example 3 1 [p 8 dimethylaminoethoxy)phenyl] 1 phenyl- 2 p anisylethylene.-When 1 [p (p dimethylarninoethoxy)phenyl]-1-phenyl-2-p-anisylethanol was heated two hours on the steam bath in an excess of 10 percent hydrochloric acid, an oil was obtained which, after crystallizing first from isopropanol and then from acetone, gave the hydrochloride salt of l-[p-(p-dimethylaminoethoxy)phenyl] 1 phenyl 2 p anisylethylene melting at l43-l63 C.

This compound exhibits estrogenic estrogen antagonist, gonadotrophic inhibitory and anti-inflammatory activities.

Example 4 I [p (,9 diethylaminoerhoxy)phenyl] 1 phenyl- 2 p anisyIethyIene-Vl'hen l [p (B diethylaminoethoxy)phenyll 1 phenyl 2 p anisylethanol was dehydrated according to Example 2 and treated with citric acid in butanone, the dihydrogen citrate salt of l-ip-(fldiethylan-iinoethoxy)phenyl] l phenyl 2 p anisylethylene was obtained, melting at 110 C. with decomposition.

This compound exhibits non-estrogenic uterotrophic estrogen antagonist, gonadotrophic inhibitory and antiinflammatory activities.

Example 5 1 [m (B diethylaminoethoxy)phenyl] I phenyl- 2-p-anisyIethylene.-Thirty grams of the dihydrogen citrate salt of l-[m-(fl-diethylaminoethoxy)phenyll-l-phenyl-2-p-anisylethanol was converted to the free base with percent sodium hydroxide and was then treated with alcoholic hydrogen chloride as in Example 2. The solvent was removed and the residue was taken up in dry benzene and diluted with ether. After standing several days, crystals of l-[m-(fi-diethylaminoethoxy)phenyl]-l-phenyl-2- p-anisylethylene hydrochloride were obtained, melting at 157-162 C.

The compound exhibits estrogenic estrogen antagonist and anti-inflammatory activities.

Example 6 I [p (p diethylaminoethoxy)phenyl] 1 phenyl- 2 p chlorophenylethylene.-Ater refluxing l [p- (,s diethylaminoethoxy)phenyl] 1 phenyl 2 pchlorophenylethanol in alcoholic hydrogen chloride as in Example 1, the product was crystallized from isopropanol to give the hydrochloride salt of l-[p-(fl-diethylamiuoethoxy)pheny1] 1 phenyl 2 p chlorophenylethylene, melting at 196-197 C.

This compound exhibits uterotrophic estrogen antagonist and anti-inflammatory activities.

Example 7 I [p (p diethyl minoethoxy)phenyll l pchlorophenyl 2 phenylethylene.--When 1 [p (B diethylaminoethoxy)phenyll 1 p chlorophenyl 2- phenylethanol was dehydrated and treated with citric acid as in Example 4, the dihydrogen citrate salt of i [p (B- diethylaminoethoxy)phenyl] 1 p chlorophenyl 2- phenylethylene was obtained, melting at 127 C. with decomposition.

This compound exhibits non-estrogenic uterotrophic estrogen antagonist, gonadotrophic inhibitory and anti-inflammatory (dextran edema) activities.

Example 8 I [p (p diethylaminoethoxy)phenyl] 1 pchlarophenyl 2 p a'nlsylethylena-When l [p (fidiethylaminoethoxy)phenyl] 1 p chlorophenyl 2 panisylethanol was dehydrated and treated with citric acid, as in Example 4, the dihydrogen citrate salt of l-t -(pdiethylaminoethoxy)phenyl] 1 p chlorophenyl 2 panisylethylene was obtained, decomposing at 143 C.

This compound exhibits uterotrophic and anti-inflammatory activities.

Example 9 1 [p (fi diethylaminoethoxy)phenyl] 1.2 di pchlorophenylethylene.Aftei' dehydrating 1 [p (5 diethylaminoethoxy)phenyl] 1,2 di p chlorophenylethanol and treating the product with citric acid as in Example 4, the dihydrogen citrate salt of l-lp-(fl-diethylaminoethoxy)phenyl] 1,2 di p chlorophenylethylene was obtained, melting at 176-178 C.

This compound exhibits uterotrophic and anti-inflammatory activities.

Example 10 I [p (p diethylaminoethoxy)phenyll I p tolyl- 2-panisylethylene.--Following the procedure of Example 4, 1 [p (fl diethylaminoethoxy)phenyl] 1 p tolyl- 2-p anisylethanol was dehydrated and the dihydrogen citrate salt of l-[p-(p-diethylaminoethoxy)phenyl]-1-p-tolyl- Z-pI-anCisyIethylene was obtained, decomposing at 118 12 This compound exhibits estrogenic estrogen antagonist and anti-inflammatory activities.

Example I] I [p (fl-diethylaminoethoxy)phenyl]J-p-tolyl-Z-pchlorophenyIethylene.-'Ihe dehydration of I-[P-(fl-di' ethylaminoethoxy) phenyl]-1-p-tolyl-2-pchlorophenylethanol as in Example 4 gave a product which was treated with citric acid to give the dihydrogen citrate salt of l [p (p diethylaminoethoxy)phenyll-l-p-tolyl-Z-pchlorophenylethylene, decomposing at 118 C.

This compound exhibits anti-inflammatory activity.

Example 12 phenyl]-l-phenyl-2-p-anisylethanol was dehydrated with alcoholic hydrogen chloride and then treated with citric acid as in Example 4, the dihydrogen citrate salt of 1-[p- (B diethylaminobutoxy)phenyl] 1-phenyl-2-p-anisylethylene was obtained, melting at 9598 C.

This compound exhibits estrogenic estrogen antagonist, gonadotrophic inhibitory and anti-inflammatory activities.

Example 14 I-[p (fi di-n-butylaminoethoxy)phenylll-I-phenyl- Z-p-anisylethylene-When 1 [p-(p-di-n-butylaminoethoxy)phenyl]-1-phenyl-2-p-anisylethanol was treated with alcoholic hydrogen chloride as in Example 1, the oily product was crystallized from dry benzene and ether. After recrystallizing from butanone and ether, the hydrochloride salt of 1-[p-(fi-di-n-butylaminoethoxy)phenyl]- l-phenyl-2-p-anisylethylene was obtained, melting at 167-l72 C.

This compound exhibits weakly estrogenic estrogen antagonist activity.

Example 15 I [p (B-diethylaminoethoxy)phenyl]-1-phenyl-2-p tolylethylene.When l [p (,S-diethylaminoethoxy) phenyl]-l-phenyl-2-p-tolylethanol is dehydrated with alcoholic hydrogen chloride as in Example 1, the product was crystallized from ethyl acetate to give the hydrochloride salt of 1-[p-(B-diethylaminoethoxy)phenyl]-lphenyl-2-p-tolylethylene, melting at 16317l C.

This compound exhibits uterotrophic estrogen antagonist, gonadotrophic inhibitory and anti-inflammatory activities.

Example 16 I [p (,3 diethylaminoethoxy)phenyll-I-p-tolyl-Z- phenylethylene.-When 1 [p-(p-diethylaminoethoxy) phenyl]-1-p-tolyl-2-phenylethanol was dehydrated with alcoholic hydrogen chloride and the product treated with citric acid as in Example 4, the dihydrogen citrate salt of lpfi-diethylaminoethoxy) phenyl -l-p-tolyl-2-phenylethylene was obtained, melting at 122l24 C.

This compound exhibits non-estrogenic uterotrophic and anti-inflammatory activities.

Example 17 1 [p (fl-dimethylaminoethoxy)phenyl] -1-phenyl-2-pbromophenylethylene.-After refluxing a solution of l- [p-(B-dimethylaminoethoxy)phenyl]-l-phenyl 2 p bromophenylethanol in alcoholic hydrogen chloride as in Example 1, the product was crystallized from ethyl acetate to give the hydrochloride salt of I-[p-(fl-dimethylaminoethoxy)phenyl] 1 phenyl-Z-p-bromophenylethylene, melting at l98l99 C.

This compound exhibits weakly estrogenic uterotrophic, gonadotrophic inhibitory and anti-inflammatory activities.

Example 18 I [p (/8 (fi,;8'-bis[chl0r0ethyl]amin0)ethoxy) phenyl]-1-phenyl-2-p-anisylethylene.-T0 a mixture of 198 g. of 4-hydroxybenzophenone and 54 g. sodium methoxide in 500 cc. of ethanol was added 572 g. of ethylene chlorobromide. The mixture was refluxed 4 hours, the ethanol was replaced with ether and the solution washed with sodium hydroxide, dried over anhydrous magnesium sulfate and when the volume was reduced, 4 (B-chloroethoxy)benzophenone separated, melting at 77-78 C. To a solution of 122 g. of this ketone in 300 cc. dry benzene was added 1350 cc. of an ethereal solution containing 0.5 mole of p-methoxybenzylmagnesium chloride. The mixture was stirred for 2 hours, decomposed with 10% hydrochloric acid, the solvent was removed and the oily residue was refluxed in alcoholic hydrogen chloride for 3 hours. The oily product, after removing the alcohol and hydrochloride, was refluxed in 200 cc. isoamyl alcohol containing 78 g. of diethanolamine for 24 hours. After removing the isoamyl alcohol, the residue was shaken with ether and 10% sodium hydroxide, the ether solution was washed with water, extracted with 10% hydrochloric acid, the aqueous layer was made alkaline and extracted with ether.

The oily residue (150 g.) was dissolved in 500 cc. dry benzene and g. of thionyl chloride was added slowly with cooling. After stirring 3 hours, the benzene and excess SOCl, were removed, the residue was taken up in methylene chloride and diluted with ether to give a solid product. Three crystallizations from dry benzene gave 1 [p (p (A3 bis[chloroethyl]amino)ethoxy) phenyl]-1-phenyl-2-p-anisylethylene as the hydrochloride, melting at 140 C., with decomposition.

This compound exhibits weakly estrogenic uterotrophic, gonadotrophic inhibitory and anti-inflammatory activi ties.

Example 19 1 [p (fl-diethylaminoethoxy)phenyl]-1-phenyl-2-pfluorophenylethylene.-When 1-[p (p-diethylaminoethoxy)phenyll-1-phenyl-2-p-fluorophenylethanol was dehydrated according to Example 2 and treated with citric acid in butanone, the dihydrogen citrate salt of l-lp-(B- tliethylaminoethoxy)phenyl] 1-phenyl-2-p-fluorophenylethylene was obtained, melting at 127 C. with decomposition.

This compound exhibits anti-inflammatory activity.

All of the compounds of the above examples exhibited the activities described for each when administered parenterally (subcutaneously). Also, the compound of Example 4 exhibited estrogen antagonist activity when administered orally. Also, the compounds of Examples 3, 6 and 16 exhibited anti-inflammatory activity when administered orally.

The following examples illustrate suitable pharmaceutical compositions containing the new compounds. In

these examples, the quantities are given for single units,

it being understood that in actual practice, the dosage forms will be prepared in suitable quantities, and the amounts of the materials adjusted accordingly.

Example 20 25 mg. tablets.Twenty-five mg. of the citrate of l-[p- (,B-diethylaminoethoxy)phenyl]-1 phenyl 2 p anisylethylene (Example 4), 48 mg. of powdered sugar, and 32 mg. of corn starch are mixed and granulated with 10 percent gelatin solution. The granulation is dried and ground to fine granules for tablcting. About 1 percent magnesium stearate is added as a lubricant, together with sufiicient corn starch to give a weight of 2.5 grains per tablet. The product is compressed on a single punch or rotary machine using a inch punch.

Example 21 500 mg. tablets-Five hundred mg. of the citrate of 1- [p-( fl-diethylaminoethoxy) phenyl] -l-phenyl-2-p-anisy1- ethylene (Example 4) in finely powdered form is admixed with 60 mg. of corn starch and mg. of powdered sugar and then granulated with 10 percent gelatin solution. The granulation is dried and ground to size suitable for tablcting. About 1 percent magnesium stearate is added as a lubricant, together with sufiicient corn starch to give a weight of 700 mg. per tablet. The product is compressed on a single punch or rotary using a inch punch.

The tablets of Example 20 and Example 21 may be suitably coated if desired, as, for example, with sugar.

Example 22 Capsule.Twenty-five mg. of the citrate of l-[p-(B- diethylaminoethoxy)phenyl]-1-phenyl-2-p -anisylethylene (Example 4) is admixed with corn starch in quantity required to provide suflicient bulk for the desired size capsule, and the mixture is encapsulated.

Example 23 CapsaIe.-Five hundred mg. of the citrate of l-lp-(p- (Example 4) is admixed with suiltcient corn starch notorietgive the proper bulk for the desired size capsule, and i may be achieved by use of micronized material or by use of a ball mill; maintaining aseptic conditions. the above suspension msy be administered subcutaneously and intramuscularly.

Example 25 Oral suspension, 700 mg. per mL-One hundred fifty mg. of Veegum H.V. are hydrated in about 9 mi. of

water; 500 mg. of Tween 80, 700mg. of the citrate of 1-[p-(p-diethylaminoothoxy)phenyl]-1-phenyl-2-p-anisylethylene (Example 4), color and flavor, as desired, and water q.s. 15 ml. are added; the product is mixed well and homogenized.

Example 26 Liquid (syrup) mg. per teaspvon.--Twenty-five mg.

of the citrate of l-[p-(ti-diethylaminoethoxflphenyl]-l-' 1 phenyl-Z-p-anisyiethylene (Example 4) is dissolved in one ml. of water. Five mg. of sodium benzoste, 3.5 ml...

of liquid sugar, 5 mg. of citric acid, and 0.375 mg. of

butoben are added and stirred until dissolved, using gentle heat it necessary. Flavor, as desired, and wste q.s. are then added. Example 27 Liquid (syrup) 500 mg. per,tablcspoau.-Five bun dred mg. of the citrate of l-[p-(p-diethylarninoethoxy) phenyll-l-phenyl-2-p-anisylcthylene (Example 4) and 4.5

mg. of sugar are dissolved in suiiicient water so that after the addition of 2.25 mi. of alcohol USP and flavor,

as desired, the volume is 151211.

Example 28 [nice-table solution, mg. per mL-Otte hundred mg of the citrate of l [p-(fidicthylaminocthoxy)phenyll-lphenyl-Z-p-anisylethylene (Example 4) and water for in jection q.s. one ml. are mixed and warmed gentlytill.

solution is accomplished. The solution is filtered through an 03 porosity Selss filter, using sterilized equipment under aseptic conditions, and is used freshly made-up for injection.

Example 29 1% ointment-To a melt of 1.5 lbs. of propylene glycol 6.68 lbs. of polyethylene glycol 400 USP and 6.68 lbs. of carbowax 4000 USP is added 0.15 lb. of micropulverized citrate of l-ip(fi-diethylarninoethoxy)phenyIJ-I-p-chlorophenyl-Z-phenylethylene (Example 7). The product is stirred unlit almost solid and milled it necessary to a smooth ointment. Fill. in suitable coittainers.

giycoi Mite. of polyethylene glycol 400 USP Ind il cerium: 46416 a v: 4-; Example 30 5 was ointmcm.--To s melt of 1.5 lbs. ot- I use is series 1.5 lbs. otmiem uvcmes stirred month ointment. Fill in suitable containers.

The other compounds of Examples 1 to 19 csnslso housed to prepare hsrmaceutical prepsrstions such ss those'ot Examples 20 to 30.

This mlleatiem is a continuation-input of our spplicllld'tttfidfill No. 620,570, filed November 6,

condoned.-

Wis claim:

l. iCompouuds of the formula wherein one of the, groups represented by R is a group of the formula -'-0C,.H,,,A, attached by the oxygen atontj to the benzene ring in one of the positions meta andpara to the point of attachment of the benzene ring to the carbon atom of the straight chain group, wherein n is an integer of 2 to 4 and A is selected from the lump consisting of amino, alkylamino in which the silryl g'oup contains from i to 4 carbon atoms, and dislltylaminoin which the ethyl groups contain from i to 4 carbon stonm and. dithaloailtynamino in which the alltyl groups eonthin {tom 1 to 4 carbon atoms, wherein the remaining group represented by R and the R group are selected, 1 from the group consisting of hydrogen, halogen, methyl sndmethouy at least one of the said groups being u lectcd from halogen, methyl and tncthoxy.

2. 'l-[p; (,8 diethylaminocthoxy)phenyl]-l-phenyl-2- p-auisyleth'ylene.

; in -ta tsponisyl'sthylene.

4. hip-(p diethylaminoethoxflphenyl]-1-p-chlorophenyl 2-p-anisylethylene.

I 5.;1-tp-(p diethylaminocthoxy)phenyl]-1,2 di pchlorophenylethylenc.

' 5- 'i-lp 1 (B ,diethylaminoethoxy)phenyll-l-p-tolylqv-prchlotophenylothylerte. I

References Cited in the file of this patent UNITED STATES PATENTS 2,430,891 Shelton et a1. Nov. 18,1947 2,571,954 Shelton et al. Oct. 16, i 2,645,355 Zweifel et al July 21, 1953 5 I FOREIGN PATENTS. v t 586,493 Great Britain Mar. 20, 1941 19,596 Netherlands Feb. 15, 192.9

OTHER REFERENCES Grundy: Chemical Reviews, vol. 57, pp. 351-401, No. 2, April 2957.

until sltuost solid and milled it dieui lammccmcm ncn ii l 'p nenyt-z 

1. COMPOUNDS OF THE FORMULA 